DGCA -ATPL - Oral -QBank
 

An appeal to all those who have cleared/ appeared for the Oral part of the ATPL Examination which the Indian DGCA conducts from time to time :

Kindly take some time out, try to recollect and post a few questions here, that you were asked on that fateful day.

Could be anything ranging from a general idea as to how the session progressed to verbatim questions as barked out by the people on the panel.

---All in an effort to try an create a bank of questions, which could prove useful to the others in our fraternity.

guys the ATPL orals have started today.
Please let us know the questions if able.

NAV n Radio both
1. Diff between GPWS n EGPWS. KInd of warning EGPWS gives, how does it work
2. RNP, what exactly is that, RNP 1 better or RNP 10
3. GRID MORA on jepp chart
4. CANPA-Constant angle non precision approach
5. VOR, DVOR(Doppler VOR), NDB, which one would you prefer to use and why
6. Showed Chennai approach plate-Which type of approach is that-VOR
7. RADIO ALT
8. RVSM contingencies
9. ALL types of projections, if you are at equator which type of chart would you
use(projection type)
thse are the one i could remember as of now, will let you people know, if i could recollect more of them

thanks a ton

Thanks addy.

@planeboy 777
Buddy I remember seeing your post in the indigo thread. You seems to have cleared your indigo exam. Could you please share the interview questions asked in the indigo interview.

hi guys.. i wonder why people are not putting questions over here.
Well had my radio-instru oral yesterday, this was my 1st attempt and question were very basic, may be they are easy on unemployed ones.. :E i have few doubts regarding the ques i was asked

1. What are ILS components
my answer was (a) glide slope (b) localiser (c) marker beacon and i explained the positioning, frequency band and few other details which they asked about these 3 components and then they asked about other components !!!! I have no idea what "other components" should have been told

2. Tied gyro
Here let me know what is the difference between "Degrees of freedom" and "Planes of freedom" because according to them there is nothing like "degrees" of freedom :rolleyes:

Let's be a little bit more responsible and show a little more respect towards the seniors on the panel.

:ok:

If they were referring it from a chart, I think they were talking about the dme. It's an imp part of an ils approach. For example g/s out, you need the dme and height cross check to shoot the approach.

ILS components
 

I can think a couple of other components namely,
-Marker Locators(NDB co-located with the fan markers)
and Airborne equipment!(remember it is also very important because of the obvious reason..) :ok:

Cheers!

@ LOFT
may be they wanted "dme" only as after the ils questions, they did ask me if the marker beacons are necessary?.... and the DME came up

and what about the "degrees of freedom"?
this is what is mentioned in GSP. I agree "planes" of freedom is correct but "degrees" of freedom is also not wrong

@kiitos.patole
I did ask them if they wanted ground components or the aircraft but the reply was " Did i mention anything like ground or aircraft?? I am just asking about the ILS components" :uhoh:

@ Uniform. - At Which center did you give your Viva.... Bbay ?

Approach lighting system,
Runway light system:rolleyes::rolleyes::rolleyes::rolleyes::rolleyes:

@ doubleactionjack
yes. was that a guess?

Hey
 

Yup, It was a guess... :)

Gna be giving my Viva soon @ bbay

q. How many satellites are required for RAIM?
q. What airspaces are there in India?
q. What is RVSM - what are the requirements for an aircraft to enter rvsm airspace?
q.What is RNP

Was this for radio aids or nav ?

The first Q comes under Radio Nav+ Instrumentation. The rest under Gen. Nav.

For RAIM - 6 Satellites Minimum
Indian Has Class - D - Airspace

Hope these are correct ?

For RAIM you require a minimum of 5 satellites, while assuming only FD.
For FDE you require 6.

Some radio aids ques that I got asked:
- compass errors (accel/decel)
- fms and it's interfaces
- irs construction, working, limitations, relation b/w time to align vs latitude
That's all I could think of.
-CM

5

D,E,F,G

2 X Altimetry Systems with Cross-coupled static ports + Icing protection
1 X SSR Transponder with auto-altitude reporting capability
1 X Automatic altitude Control System
1 X Automatic altitude alerting system

RAIM FD - 5 satellites or 4 satellites + barometric altimeter (baro aiding)

FDE - 6 satellites or 5 + baro aiding

As per AI ops manual : The components of ILS : Localiser, Glide Path, Outer Marker, Middle Marker and Approach Lighting System.
:ok:

It was a combined oral for Gen. Navigation & Radio Aids-Instruments.
1.Requirements for aircraft to enter a RVSM Airspace.
2.Class of Airspace in India.
3.GPWS and EGPWS, Reasons for EGPWS that it gives us the warnings and alerts for terrain ahead also?
4.Hard Iron & Soft iron Magnetism ; What kind of magnetism will an aircraft acquire if it is hammered for a long time? ; EGPWS Mode 6.
5. For Navigation, lots of Jeppesen Charts questions were asked.
Colours for GRID MORA, Scale on Jepp. Chart, Approach plates -LOC approach(GS out).

Radio/General navigation combined oral(previous attempt):

-pitot static instruments
-explain static pressure
-TAT>OAT, why?
-explain density error
-mach meter errors
-INS setting/faliures
-Radio altimeter errors
-TCAS TA,RA range
-what is a VOLMET?
-night effect
-sidereal day
-VOR errors
-VOR tracking problem
-VOR-DME co-location criteria
-Glide Slope coverage range
-what is P RNAV
-speed to be maintained when in a DME arc
-grid mora (colours on the chart)
-RL on a Mercator
-Vref speed categories
-converting climb gradient to RoC (the examiner was looking for a rule of thumb formula)

any further inputs on general nav will be appreciated

good luck!

That, during an ATPL Viva. Nice!

And you know what's better?
This was the 1st question to be asked :cool:

Woah thats a lot of Questions :confused:

TCAS TA,RA range - Forward Range for TCAS 2 = 40 Nm
Speed to be maintained in a DME arc = 230 KIAS

And also, from the previous post..

Magnetism Induced due to hammering = hard Iron Mag

Please do correct if i am wrong.

dgca atpl oral
 

Hi friends,

I gave the oral on the 9th.gave both navigation and radio aids.i was asked the following questions.it was quite basic.


1) what is cp
2)what is pnr
3)factors affecting cp and pnr
4)approach plates brief gaya airports approach and questins on the approach plate
5)what is coffins corner
6)what happens to TAS AND MACH NO AS U CLIMB IN THE SAME CAS
7)WHAT IS MACH CRIT SPEED
8)what is canpa
9)what is derived decision altitude
10)what is ils and its components
11)give a brief description on mercator,polar stereographic and lamberts charts
12)what is navigation
13)what is RNP
14)diff between ins and irs
15)how will u align a ins
16)what input errors will the ins system will accept
17)what is rnav

need help
 

simple problems but need an explanation for the following how to solve it..

1) aircraft requires headwind comp of at least 10knts and crosswind limit of 35knts. the angle between the wind direction is 60 deg. calculate maximum and min allowable wind speeds?

2) after take off you can accept upto 10knts of tail wind. the runway QDM is 047, the var is 17deg E and the atis gives wind direction 210 what is the max wind strength you can accept?

3) magnetic hdg 311 deg ,
drift 10deg left
relative bearing of NDB270
what is the magnetic bearing of NDB measured from the aircraft?

DGCA ATPL Orals are easy if you have studied through the syllabus given on the website.
They ask Basic questions to test your knowledge and understanding. Nothing in depth.
So i'd advice brush up on everything given in the syllabus.

atpl oral jan attempt
 

i request people who appeared for the atpl oral to please come up with the topics asked in the oral today......thanks in advance

DGCA orals 2012
 

I have my orals on the 29th march. Guys please post the questions asked in orals for the ongoing session i.e 27 march to 04 april.

ATPL viva 28th march mumbai
 

Here you go guys. hope it helps. Please do post up your questions after you are done too.

Questions
1) Jeppesson
(a) show on the approach plate the "symbol" for RVR transmissometer.
(b) how many RVR's are usually present along a runway?
(c) What is MEHT? (i believe it's Minimum Eye height over Threshold)
(d) what is OCA?

2) Radio Aids and Navigation
a) explain carrier wave? can a carrier wave carry information?
b) explain Side bands?. If carrier wave is 500 hz, what are the value of the side bands?
c) What do you know about NAT? (North Atlantic routes)
d) Explain how FMS plots it's position?
e) does FMS use great circle or rhumbline tracks?
f) ETOPS? What ETOPS req.s are 777's rated to? (ans they were looking for is 240)
g) difference between INS and IRS?
h) ACARS? , CPDLC? , FANS?, ADS-B? (Also the frequency bands they fall in)
i) What interface does crew use to use ACARS ? (fms etc)
j) difference between RNP and RNAV. What is ANP?
k) If an equipment fails, what do you do if you are flying an RNP route? (ans- advise atc to estabilish clearance)
l) What is Grivation? Where is grids used in navigation?
m) where are lambert's conformal charts used other than in aviation?
n) difference between doppler VOR and VOR?..why is doppler VOR better?
o) simple problems about deviation and variation and relative bearing
p) range of VHF- rx and tx height given
q) cp, pnr formulas
r) what is point of no continuance?
s) what is optical line of sight? (not sure about exact words- basically VHF line of sight)
t) some question regarding the position of a bear if he travels east south west north..what's his final position? This takes the cake :D
u) CANPA? CDFA?

All I can remember...good luck guys...Please post up your questions after you are done..:ok:

atpl radio aids oral 29th
 

topics asked were
CANPA
Diff b/w ILS X & ILS Y
RVSM
RNP
ILS
DME
GPWS
INS, IRS, GPS

DGCA orals 29 March 2012
 

Working of a Servo Altimeter.
RNP/RNAV
ILS reference point
If the wavelength is 2 cm, what is the frequency?
Primary radar v/s secondary radar.
Working of weather radar.
How is cloud height calculated using weather radar?
Frequency band of SHF.
What is a BFO?

2nd April 2012 General Nav
 

1. VEGT chart difference between ILS X and ILS Y?
2. Can you do ILS approach without Glideslope? Ans.-Yes
3. Jeppesen Enroute Chart -- asked me to find a place on the chart and asked some symbols on the chart
4. where are the standard paralles written on jeppesen enroute chart?
6. what is TODA and TORA?
7. What is the difference between Clearway and stopway?
8. what is variation and deviation?
9. RVSM weather obstruction criteria?
10. Difference between RNAV and RNP?
11. Grid Mora, MOCA, MORA?
:ok:
Thats all i can recall Guys!

GSP mentions for RAIM you need 6 or more satellites, so how come people have mentioned 5 here. please explain.
whats FDE?

i believe when it is 5 satellites for raim it is just FD which is fault detection of a satellite, n when it is 6 satellites it is FDE which is basically fault detection and removal of the fault satellite from its constellation..